import math
print(math.pi)
print(math.cos(3.14))


# x=0
# for i in range(1,101):
#     x+=0.01

# print(x)

# 1/3*3-1=0
# 0.3333*3-1=-0.00001
# import math
# x=math.cos(math.pi / 2)
# y=math.sin(math.pi / 2)
# print(x)
# print(y)